⦁ Please help me!! Which of these are examples of physical properties? Be able to defend your answers.
A brown dog-
A melting ice cube-
A burning campfire-
A bendable straw-
A rusty nail-
Stacey Warren - Expert brainly.com
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Can you pick more than 1?
and i have to explain why an why not
Okay, do you have any idea which ones it might be? Hint: there's more than one
melting ice burning campfire
Alright, melting ice is correct, that is a physical change. Do you know why?
no i dont
Well, ice is just solid water, right? Frozen H2O.
So basically, when you melt ice, you're just turning a solid into a liquid. Solid/liquid/gas are all a physical state of being. The chemical properties are the still same.
Now, burning a campfire, that would have to be chemical.
There's one more physical one. The signs of a chemical change are a change in color, formation of a precipitate, formation of a gas, odor change and temperature change. Try again keeping this in mind
a rusty nail
Rust is definitely a chemical change. It's a chemical reaction to iron and steel reacting to water and oxygen over a long period of time.
Also, I'd actually say there are two other examples of physical properties besides a melting ice cube
well is it a brown dog
ohhh and bendable straw
Yes. Do you understand why? Bending a straw changes absolutely nothing about the chemical composition of the straw, you're simply changing its /physical/ state.
Now, if you had said that the dog's color changed, that would be chemical. But since it's not, the color of the dog is just one of its physical properties